Linking phosphorus availability with photo-oxidative stress in plants

Journal of Experimental Botany
Iker Hernández, Sergi Munné-Bosch

Abstract

Plants have evolved a plethora of mechanisms to circumvent the potential damaging effects of living under low phosphorus availability in the soil. These mechanisms include different levels of organization, from root-shoot signalling at the whole-plant level to specific biochemical responses at the subcellular level, such as reductions in photosynthesis and the consequent activation of photo- and antioxidant mechanisms in chloroplasts. Some recent studies clearly indicate that severe phosphorus deficiency can lead to alterations in the photosynthetic apparatus, including reductions in CO2 assimilation rates, a down-regulation of photosynthesis-related genes and photoinhibition at the photosystem II level, thus causing potential photo-oxidative stress. Photo-oxidative stress is characterized by an increased production of reactive oxygen species in chloroplasts, which at low concentrations can serve a signalling, protective role, but when present at high concentrations can cause damage to lipids, proteins and nucleic acids, thus leading to irreversible injuries. We discuss here the mechanisms that phosphate-starved plants have evolved to withstand photo-oxidative stress, including changes at the subcellular level (e.g. activation ...Continue Reading

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Citations

Aug 4, 2015·Plant Signaling & Behavior·Emilio Gutiérrez-BeltranPanagiotis N Moschou
Jun 19, 2015·Protoplasma·Manoj Nath, Narendra Tuteja
May 7, 2015·International Journal of Endocrinology·Dóra Zelena
Feb 20, 2019·Genes·Ishan AjmeraChungui Lu
Nov 13, 2019·The Plant Journal : for Cell and Molecular Biology·Noe Fernandez-PozoStefan A Rensing
May 4, 2020·Plant, Cell & Environment·Mutsumi WatanabeMatthias Wissuwa
Nov 25, 2018·International Journal of Molecular Sciences·Santosh KcJianyun Ruan
Dec 11, 2019·Plants·Md Motiar RohmanMirza Hasanuzzaman
Jan 26, 2021·Frontiers in Plant Science·Pushp Sheel Shukla, Balakrishnan Prithiviraj

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